Capabilities

The user can rapidly regenerate. In other words, they recreate lost or damaged tissues, organs and limbs, sometimes slowing, or even stopping, ageing. The rate and amount of healing varies widely (see Levels of Regeneration); some can regrow missing limbs, others must put the limb back in place for rapid regeneration. They are generally in very good physical shape as their bodies are constantly reverting to healthy state, granting them nigh-inexhaustible stamina and vitality.

At higher levels, users can regenerate not just their cellular tissues, but also their DNA, undoing genetic mutations and breakdown, as well as maintaining one's youth by extending telomeres. This also gives them immunity to diseases and infections, undoing any unwanted symptoms, as well as provide a form of self-sustenance, foregoing the needs for oxygen and food intake. If advanced enough, the ability will cause the body to cease aging as the cells are regenerating and dying in equilibrium, granting immortality.

Regeneration differs from wound healing, which involves closing up the injury site with a scar.

Ample Regeneration: (Surplus Regeneration, Hydra Effect) User grows back extra of whatever body parts are lost or lethally injured. One with this ability may lose an arm, and grow back two, or the like.

User's body may only grow back two limbs or organs at a time; and the body can subliminally intuit when not to grow back extra parts (so the user doesn’t end up with eight heads or the like, which will actually impair function instead of helping it).

Anatomical Liberation: User "re-collects" body parts after said parts have been dismembered or removed from the body. This ability makes being dismembered and vaporization impossible, as the body will simply pull itself back together.

Healing Trance: Undergo a trance, allowing the user’s body to heal without danger. One with this ability may generate an aura of healing energy, a psychic aura which accelerates the healing process, or a defensive aura to prevent further damage. In the first case, the life energy required may be absorbed from outside areas. In the second case, the energy comes from the mind. In the third case, the aura levitates the user and matches any outside force so as to be impenetrable by potentially-harmful outside forces.

Nerve Regeneration: (Neural Regeneration, Nervous System Regeneration) Regenerate one’s nerves (which usually are incapable of regeneration) and to return them back to their original state after harm. The user could use this ability to resist being stunned, going unconscious, going into shock from intense pain or permanently losing sensation in any part of the body.

This ability may grant immunity to paralysis, stroke, mental disability or the like, if the entire nervous system can regenerate.

Other

Known Objects

Gallery

Comics

Joker's (DC Comics) spine contains the chemical compound Dionesium, , which allows him to recover from injures at an accelerated rate. He was able to regenerate his face after it was cut off, and instantly heal from a lethal gunshot

Lobo (DC Comics) possessing regenerative powers of such a level that he can recreate his entire body from nothing more than a puddle of his blood, as he is banned from Death.

Jason Voorhees (Friday the 13th) regenerates after being shot with a grenade launcher.

Regen Serum (Marvel Comics) grant regeneration.

Hulk (Marvel Comics) regenerates after having his skin and most of his muscle tissue ripped off.

Mystique (Marvel Comics) regenerates and rejuvenates her cells whenever she shape-shifts, maintaining her youth and good health.

Deadpool (Marvel Comics) can survive virtually any injury, thanks to his healing factor obtained from the Weapon X program.

Daken (Marvel Comics)

Deadpool (Marvel Comics) regrowing his hand.

Thanks to his healing factor Wolverine (Marvel Comics) stays alive even though he has been shot multiple times by bullets…

Manga/Anime

Korosensei (Assassination Classroom) can regenerate his injured tentacles in seconds.

Tenzen Yakushiji (Basilisk) having his symbiote "eat" away his wounds and restoring any ravages of time or battle, even reattaching his head by sealing the cut.

Creed Diskenth (Black Cat) possesses the God's Breath nano-machines within his body, regenerating even fatal wounds in seconds and maintaining his youth, but cannot repair damage to the brain.

Ulquiorra Cifer (Bleach) retains his High-Speed Regeneration even after becoming an Arrancar, as most would have abandoned the ability for greater power.

As long as Genji Ikusabe (Buso Renkin) wields his Gekisen, he can regenerate even from being blown to bits.

The One Being Sought (Code:Breaker) possesses "Cell Regeneration", allowing him to regenerate and regrow at a cellular level, so long there is no interfering matter inside him.

Aoba Takatsu's subordinates (Code:Breaker) possess the ability Cell Stimulation, which causes their cells to grow and regenerate whenever they are attacked, gaining in size and power as long as not all of their cells are destroyed at once.

Yu Kanda (D.Gray-Man) is a Second Exorcist, all of whom possess a symbol that allows him to heal from any injury.

Alma Karma (D.Gray-Man) As a Second Exorcist he is equipped with a seal on his chest that is the core of his regenerative abilities.Alma can regenerate entire limbs, and even his whole body,more over after becoming an Akuma he can survive self-destruct.

Road Kamelot (D.Gray-Man) regenerating from all injuries that her body suffers because she can erase such damage via her Dream dimension.

Piccolo (Dragon Ball series) regenerates his severed arm, and can do so for any part of his body so long as his head remains undamaged. However, it does not give him extended stamina; contrarily, he exhausts himself more to regenerate.

Cell (Dragon Ball series) regenerating even his head and torso, as long as his core remains undamaged.

Majin Buu (Dragon Ball series) regenerating even after being blown to ashes.

Garlic Jr. (Dragon Ball series) succeeded in making a wish for immortality with the Dragon Balls, allowing him to regenerate from all bodily damage, easily closing the hole in his stomach.

Cooler (Dragon Ball series) regenerating his arm that was blown off with nano-machinery, and the Big Gete Star's main computer would rectify any weaknesses to prevent future complications.

Kagerō (Flame of Recca) acquired complete immortality from using the forbidden time-portal spell, regenerating from even fatal wounds such as a stab to the heart or slitting her subclavian artery open.

Tomiko Asahina (From the New World) regenerating the length of her telomeres, allowing her to extend her life indefinitely.

Shinnō (Naruto) using Body Revival Technique to activate cells, healing his body by manipulating the muscle's "Destruction and Rebirth" cycle, which also makes his body stronger in response.

Sachiel (Neon Genesis Evangelion) can regenerate it's injured body over time, so long as its core is not dealt a fatal injury.

Gemma Himuro (Ninja Scroll) using his Reincarnation Technique to control his body down to the tiniest bone and blood, putting his severed body parts back together, even his head is possible, rendering him immortal.

Marco (One Piece) regenerating at a tremendous rate due to his phoenix form's Blue Flames of Resurrection, even injuries sustained in his mortal human form.

Sabrina's Alakazam (Pokémon) using "Recover" to restore its own cells, healing the burns it suffered from Pikachu's "Thunderbolt".